Perhaps you should try some spelling variations:
cham cuc » cham cuu, pham cuc, pham chuc
qua cham » qua hai, qua cac, va cham
sach ky » sac ky, sach y, sach kem
ban anh » ban hanh, ban banh, ban danh
cuc ban » cua ban, cac ban, cuu ban
cua tre » cua te, cuu tre, cua triet
sach ty » sach y, sach tu, sach thu
anh de » hanh de, anh d, anh ve
de cua » le cua, te cua, dieu cua
x hoi » o hoi, x ho, 5 hoi

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ky) OR (sach ty)) nang ((x hoi) or (xa hoi)). hieu qua cham cuc ban anh de cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach ty)) nang ((x hoi) OR (xa hoi)). hieu qua cham cuc ban anh de cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sach ty)) nang ((x hoi) or (xa hoi)). hieu qua cham cuc ban anh de cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) OR (sach ty)) nang ((x hoi) or (xa hoi)). hieu qua cham cuc ban anh de cua tre*.